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Author Topic: HP laptop charger with intermittent voltage  (Read 574 times)

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Offline rodrigopiresTopic starter

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HP laptop charger with intermittent voltage
« on: April 18, 2022, 09:41:47 pm »
I got a HP laptop charger that presents intermittent voltage and makes a clicking sound at the same time voltage drops (as if there was a spark somewhere...). All the caps seem to be in good shape and i see no damage component/mark.

I uploaded a video showing the behavior with the link: https://youtube.com/shorts/nlccgf4GAMw?feature=share

Is this a comon problem? (I have never seen it) Any gesses? Thanks!
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Offline m3vuv

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Re: HP laptop charger with intermittent voltage
« Reply #1 on: April 19, 2022, 06:17:30 am »

possibly a good idea to remove it from its housing and power it on in the dark and look for any arcs.
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Online wraper

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Re: HP laptop charger with intermittent voltage
« Reply #2 on: April 19, 2022, 06:21:11 am »
Likely a small electrolytic capacitor on PWM controller VCC failed.
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